Thomas snape



(N6 Model.) 2 Sheets-Sheet 1.

T. SNAPE] NUT TRIMMING MACHINE.

No. 312,031. Patented Feb. 10 1885.

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INVENTEJH|' N. PETERS. FhMo-Lilhognpher. Wanhingiun. B. c.

(No Model.)

2 Sheets-Sheet 2. T. SNAPE.

NUT'TRIMMING MACHINE. No. 312,031.

Patented Feb. 10, 1885.

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UNITED gTaTns PATENT @rrrcis.

THOMAS SNAPE, OF PAXVTUCKET, RHODE ISLAND.

NUT TRlh/HVHNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 312,031, dated February10, 1885,

(No mothl.)

To all whom it may concern.-

Be it known that I, THOMAS Snare, of Pawtucket, in the county ofProvidence and State of Rhode Island, have invented certain new anduseful Improvements in Machines for Trimming Nuts for Bolts, &c.; and Ido hereby declare that the following is a full and correct descriptionthereof, reference being had to the accompanying drawings, making a partof this specification.

This invent-ion relates more particularly to the arrangement of devicesfor holding and feeding the nuts, and mechanism for operating thoseparts, and is fully illustrated in the drawings, in which- Figure 1shows a top view of the machine. Fig. 2 is a side elevation of the same.Fig. 3 is a front elevation. Fig. 4 shows a section of a part of themachine at line to, Fig. 3. Fig. 5 is a top View of one of thenut-holders. Fig. 6 is a section of the feed-trough and a top view ofone of the carriers through the line 00 90, Fig. 3.

The two portions of this machine are the exact counterparts of eachother, except that one part is right-handed and the other lefthandedwith regard to the arrangement for feeding the nuts to thetrimming-punches. The main frame A has two horizontal shafts, a,extending through its upper part, with gear-wheels 9 attached to oneend, and eccentrics h secured on them just inside of the bearing on theother end, of the shafts. This bearing is held by a hood or extension ofthe main frame over the eccentrics. These eccentrics are connected bystraps and rods f to the punchsockets Z, that move up and down in waysattached to the frame, and carry the trimming-punches 0. Under thesepunches are placed the dies 0', resting on a part of the main framecarried out on each half of the machine to hold the feeding mechanism.Two

sockets Z. Two pins, r, fast to the sockets, work in slots in the leversand give them motion as the punches move up and down. A broad trough, B,is placed on the frame between the two eccentrics, and is dividedthrough its middle into two parts by a movable bar, at. The outer end ofthis trough is cut out, and the bottom of the trough sloped down to meetthe tops of the vertical side troughs, D, (see Fig. 3,) which are curvedout at their lower endsone toward the right and the other to the lef--so as to connect with the nut-carriersn in front of the dies. Anadjustable guard, o, is held over each vertical trough by a bolt passingthrough the slotted supports 0. The vertical troughs are made adjustable. so that they may be increased in width by the screws 8 andslots in the lower ends of the troughs. (See Fig. 4.)

The nut-carriers a are attached to the feedslides i by bolts throughslots in them for the purpose of adjustment, and are rabbeted down attheir inner ends, (see Fig. 4,) so as to be just level with the lowerends of the vertical troughs D, that the nuts when they slide down thetroughs will pass out onto the rabbeted part of the carrier n when it isdrawn back. Adjustable plates t are placed on each side of thenut-carriers, to keep the nuts in place on them while being carried into the dies. On each side of the dies are clamping devices j, forholding the nuts when they are brought over the dies by the carriers.These clamps are shown in plan in Fig. 5. They consist of two jaws, j,held in recesses in the adjustable plates 3 and are pressed out by thesprings z, placed back of them in the recesses. As the nuts are pressedforward between the clamps, they (the clamps) recede slightly and presson the nuts, so as to hold them when the carriers are drawn back. As thepunch 6 comes down, the taper teat on the endof it enters the hole inthe nut a, Fig. 4, and adjust it. If the hole is at one side of thecenter, the spring-clamp will recede on the wide side and allow the nutto center itself properly over the dies below.

The operation is as follows: Motion being given to the machine by a belton the pulley 7c, the intermediate gear-wheel, 9, running on a studsecured to the frame between the gears g 9, drives the two gear- IOUwheels 1 and operates the two punches e by means of the eccentrics h.The nuts to be trimmed are put in the trough B, and the attendant takesaposition in front of the trough. Then with a finger of his right handhe draws one nut at a time into the right-hand vertical trough, and atthe sametime draws a nut with his left hand in the same way into thevertical trough to the left, or alternately, if pre ferred. The nutsthen pass down the troughs, and are held at the lower ends by the highpart of the carriers at until the carriers move far enough out for therabbet at the inner end to come opposite the end of the vertical troughwhen one nut only slides onto each carrier, as there is no room formore. As the punches are raised by the eccentrics the carriers are movedin by means of (he levers o, connection-rods S S, and gear-wheels d d,with the nuts 6 on them, until the nuts are between the clamps j overthe dies 0, where they are held as the punches come down, and thecarriers are drawn back by reverse movements of the parts that carriedthem forward. The punches then push the nuts through the dies and trimoff the surplus metal. The thin ends of the carriers 11-, (see Fig. 4,)as they come forward with the nuts, push off the chips left on the topofthe dies from the nut last trimmed, to prevent clogging and consequentinjury to the work.

All the parts are made adjustable, so the machine will trim nuts ofdifferent sizes. The "ertical side troughs can be Varied in width by thescrews 8 in the slots, Fig. 4; and the guards 0 over the nuts in thetroughs can be adjusted for nuts of different thickness by the screwsand slots 0, and also at c, to keep them over the middle of the troughs.The carriers a can be set backward or forward on the slides i, toaccommodate nuts of different width, by the screws that hold on theslides. The extent of the motion of the carriers in and out may also bevaried by the studs in the levers '0 and in the arm '0. The feedingdevices for the two punches may be adjusted independently of each other,so that large nuts may be fed to and trimmed by one of the punches atthe same time that smaller ones are being trimmed by the other punch.When only one size is used in both parts, the division min the trough Bmay be taken out and the nuts all put in one pile.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. The combination of two trim ming-presses having a commondriving-shaft and gear-connections with a trough to hold the nuts, andtwo adjustable side troughs to conduct the nuts to the carriers thatfeed them to the dies, substantially as and for the purpose set forth.

2. The adjustable carrier n, made with a rabbct at the inner endextending under and beyond the nut 0 when feeding it to the dies,substantially as and for the purpose specified.

3. The side troughs, D, made with slots, and provided with screwss attheirlower ends,

and having guards O, with slotted supports 0,

substantially as and for the purpose set forth.

4. The jaws j, held in recesses in the adjustable plates y, and thesprings z, in combination with mechanism for feeding the nuts to them,substantially as and for the purpose specified.

THOMAS SNA PE.

\Vitnesses:

JAMES HACKING, JOHN NEWTON.

